Redlg,
That spot is just daylight where the slides on Beretta and Taurus autos are cut away. I think a little more off-angle would eliminate it, as well as make the muzzle a little less "in your face."
Oleg's photography, always excellent, seems to be even better with each new project.
I like the idea of jacking up the saturation on the ring, even at the cost of purity of vision.
BTW: Oleg - I just got a Canon G2 for my newspaper and magazine work. It replaces my venerable Canon A50, and has almost four times the resolution.